hi monks, I have created hashs of hashs for a very large data file just trying to use my 8GB RAM. But it has a out of memory problem. My code is fine for smaller size of data, but not the whole data (20000000 lines). the major chunk of code is as below: 
while(<>){ 
    if (/^#+/){NEXT;}
    else{    
    chomp;
    @data=split (/\s+/,$_);
    $a=$data[0];
    $b=$data[3];
    $c=$data[4];
    $d=$data[5];
    $row{$a}{$b}{$c}=$d;
    }
    }
    print "Fished establishing hashs.\n";

[download]
I don't think the problem resulted from limited memory since it reported "out of memory" when it only used 40% of my 8GM ram. Could any perl guru help me resolve this problem? Thanks.

In reply to out of memory problem by lightoverhead

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